TSB 88-6-53: Engine Controls - Updated Rough/Unstable Idle Chart

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88pontiac10 Bulletin Number: 88-6-53 Reference Number: 816520 Publish Date: 6/88 Subject: SERVICE MANUAL UPDATE - 6E SECTION B ROUGH, UNSTABLE OR INCORRECT IDLE Models Affected: ALL 1981-88 SERVICE MANUAL UPDATE When using the 6E Section B, "Symptoms for a rough, unstable, or incorrect idle", make sure to check the motor mounts for damage, grounding out on the frame, mispositioned, etc. Add this check to all Section B symptom tables under the heading "Rough, Unstable, or Incorrect Idle".